getBatchItem方法的AWS.DynamoDB.DocumentClient对象是否支持全局二级索引? 、、、、 我在nodejs程序中使用AWS.DynamoDB.DocumentClient从多个Dynamodb表中获取项。为了简化代码,我选择使用BatchGetItem/BatchGet方法。面临的挑战是,我需要基于全局辅助索引(例如name+age )来获取条
DynamoDB: UpdateItem, Ignore Null values in ExpressionAttributeValues 解决方案是 DynamoDBJava版本有UPDATE_SKIP_NULL_ATTRIBUTES支持跳过空参数,但是Node.js 并没有该操作,不过他自己实现了该方案。 尝试之后,发现只支持主键不为空,但是子键没有办法,也可能是我的Node.js 功力不够,无法实现,时间问题,放弃的方案...
Properties字段下的Handler字段表明了云函数的入口位置,该云函数位于在src/handlers目录下的put-item.js文件,入口函数为该文件的putItemHandler方法。 其他字段表示了代码的执行环境为nodejs16.x;运行为台为x86_64;最大分配128MB的内存,超时时间为100秒。 Policies定义了拥有SampleTable表CRUD的权限,Environment里定义了...
DynamoDB access and management for one table designs with NodeJS - gosysinfo-tech/dynamodb-onetable
getItem(params, pfunc); /* Response {Item: {UserId : "John", Age : 21, Pic : Bin}} */ NOTE: StrToBin returns either a Buffer for NodeJS or Uint8Array for the browser. Nested DataTypes and More: var params = {}; params.TableName = "Shopping Cart"; // Compatible is a Map ...
Also, since Javascript/NodeJS uses milliseconds internally we have to multiply the values by 1000. Recall “normal” Unix timestamps are measured in seconds. Here’s how to do the conversion and enforce the type: Shell 1 item.created = new Date(item.created*1000) Another issue is some ...
get_item( TableName='my-table', Key={ 'user_id': {'S': '12345'} } ) item = response['Item'] print(item) Python Output: Below is the output format, which is the same as the DynamoDB-JSON format seen previously with the Node.js client: { 'user_id': { 'S': '12345' },...
TransactGetItems / TransactWriteItems 最多25 个 item,合计大小不超过 4 MB Throughput Limits 单个分区吞吐量上限: 3000 RCU,1000 WCU 预置容量模式下单个表默认吞吐量上限: 40000 RCU, 40000 WCU (包括基表和 GSI)参考链接 单个账号默认吞吐量上限: 80000 RCU, 80000 WCU ...
Resources: FilteredEventsFunction: Type: AWS::Serverless::Function Properties: CodeUri: s3://sam-demo-bucket/metricsConfig.zip Handler: index.handler Runtime: nodejs16.x Events: KinesisStream: Type: Kinesis Properties: Stream: !GetAtt KinesisStream.Arn StartingPosition: LATEST MetricsConfig: Metrics...
Resources: DynamoDBProcessStreamFunction: Type: 'AWS::Serverless::Function' Properties: Handler: app.handler Runtime: nodejs14.x CodeUri: src/ Description: An Amazon DynamoDB trigger that logs the updates made to a table. MemorySize: 128 Timeout: 3 Events: MyDynamoDBtable: Type: DynamoDB ...